| EPEcm Plastics INC | Worcester | MA | Chemical Manufacturing325211 | — | ◇ UNVERIFIED |
| EPEc Pigments | Fall River | MA | Textile Mills313311 | — | ◇ UNVERIFIED |
| ETEddington Thread Mfg | Worcester | MA | Textile Mills313110 | — | ◇ UNVERIFIED |
| EAEdson Anbar Foundry | Taunton | MA | Primary Metal Manufacturing331528 | — | ◇ UNVERIFIED |
| EAEdwards Acquisition LLC | Plymouth | MA | Fabricated Metal Product Manufacturing332812 | — | ◇ UNVERIFIED |
| EFEh Friedrich CO | Holyoke | MA | Fabricated Metal Product Manufacturing332321 | — | ◇ UNVERIFIED |
| EIE I Dupont De Nemours - New Prods Plant | Westwood | MA | Chemical Manufacturing325188 | — | ◇ UNVERIFIED |
| EIE Ink CORP | Cambridge, Town of | MA | Chemical Manufacturing325910 | — | ◇ UNVERIFIED |
| EIE Ink Corporation | Cambridge | MA | Chemical Manufacturing325910 | — | ◇ UNVERIFIED |
| EIEisai INC | Andover | MA | Chemical Manufacturing325412 | — | ◇ UNVERIFIED |
| EIEisai INC | Andover | MA | Chemical Manufacturing325412 | — | ◇ UNVERIFIED |
| ESElastomer Solutions INC | Leominster | MA | Chemical Manufacturing325211 | — | ◇ UNVERIFIED |
| ECElectronic Concepts INC | Lee | MA | Plastics and Rubber Products Manufacturing326113 | — | ◇ UNVERIFIED |
| EEmc | Westborough | MA | Computer and Electronic Product Manufacturing334111 | — | ◇ UNVERIFIED |
| ECEmc CORP | Southborough | MA | Computer and Electronic Product Manufacturing334111 | — | ◇ UNVERIFIED |
| ECEmc Corporation | Franklin | MA | Computer and Electronic Product Manufacturing334112 | — | ◇ UNVERIFIED |
| EPEmco Printers Incorp | Everett | MA | Printing and Related Support Activities323111 | — | ◇ UNVERIFIED |
| EMEmd Millipore CORP | Billerica | MA | Plastics and Rubber Products Manufacturing326199 | — | ◇ UNVERIFIED |
| EMEmd Millipore CORP | Taunton | MA | Computer and Electronic Product Manufacturing334516 | — | ◇ UNVERIFIED |
| EMEmd Millipore CORP - Bioscience Division | Danvers | MA | Machinery Manufacturing333220 | — | ◇ UNVERIFIED |
| EMEmd Millipore Corporation | Danvers | MA | Fabricated Metal Product Manufacturing332999 | — | ◇ UNVERIFIED |
| ESEmd Serono Research and Development Inst | Billerica | MA | Chemical Manufacturing325412 | — | ◇ UNVERIFIED |
| ESEmd Serono Research Institute INC | Rockland | MA | Chemical Manufacturing325412 | — | ◇ UNVERIFIED |
| ECEmerson & Cuming | Canton | MA | Chemical Manufacturing325211 | — | ◇ UNVERIFIED |
| ECEmerson & Cuming Composite Materials | Canton | MA | Chemical Manufacturing325211 | — | ◇ UNVERIFIED |
| ECEmerson & Cuming Microwave Products | Randolph | MA | Chemical Manufacturing325211 | — | ◇ UNVERIFIED |
| ECEms Cup LLC | Attleboro | MA | Primary Metal Manufacturing331421 | — | ◇ UNVERIFIED |
| ELEmw LLC | Middleton | MA | Fabricated Metal Product Manufacturing332710 | 1-19 | ◇ UNVERIFIED |
| ESEnergy Sciences INC | Wilmington | MA | Computer and Electronic Product Manufacturing334419 | — | ◇ UNVERIFIED |
| EEntegris | Bedford | MA | Chemical Manufacturing325188 | — | ◇ UNVERIFIED |
| EIEpec Incorporated | New Bedford | MA | Computer and Electronic Product Manufacturing334412 | — | ◇ UNVERIFIED |
| EPEpic Polymer Solutions LLC | Northborough | MA | Miscellaneous Manufacturing339999 | 1-19 | ◇ UNVERIFIED |
| EIEquity Industrial Gheb LLP | East Bridgewater | MA | Computer and Electronic Product Manufacturing334513 | — | ◇ UNVERIFIED |
| EIErcon INC | Wareham | MA | Chemical Manufacturing325910 | — | ◇ UNVERIFIED |
| ECEssential Coatings & Millwork LLC | Springfield | MA | Wood Product Manufacturing321999 | — | ◇ UNVERIFIED |
| EPExcelsior Printing | N Adams | MA | Printing and Related Support Activities323110 | — | ◇ UNVERIFIED |
| EPExcelsior Process & Engraving | North Adams | MA | Printing and Related Support Activities323110 | — | ◇ UNVERIFIED |
| EEExxonmobil Everett Terminal | Everett | MA | Petroleum and Coal Products Manufacturing324121 | — | ◇ UNVERIFIED |
| ETEy Technologies (engineered Yarns) | Fall River | MA | Textile Mills313111 | — | ◇ UNVERIFIED |
| FSFacemate Site | Chicopee | MA | Textile Mills313310 | — | ◇ UNVERIFIED |
| FFFairfield Farms Kitc | Brockton | MA | Food Manufacturing311412 | — | ◇ UNVERIFIED |
| FSFairhaven Shipyard Co.inc- South Yard | Fairhaven | MA | Transportation Equipment Manufacturing336611 | — | ◇ UNVERIFIED |
| FSFairhaven Shipyard North Yard | Fairhaven | MA | Transportation Equipment Manufacturing336611 | — | ◇ UNVERIFIED |
| FRFall River Ready Mix Concrete | Fall River | MA | Nonmetallic Mineral Product Manufacturing327320 | — | ◇ UNVERIFIED |
| FFFalvey Finishing Company | Boston | MA | Furniture and Related Product Manufacturing337211 | — | ◇ UNVERIFIED |
| FBFancypants Baking CO. | Walpole | MA | Food Manufacturing311821 | 20-99 | ◇ UNVERIFIED |
| FPFc Phillips INC | Stoughton | MA | Fabricated Metal Product Manufacturing332721 | — | ◇ UNVERIFIED |
 Federal Metal Finishing INC | Charlestown | MA | Fabricated Metal Product Manufacturing332813 | — | ◇ UNVERIFIED |
| FEFeedback Earth INC | Grafton | MA | Food Manufacturing311119 | — | ◇ UNVERIFIED |
| FCFeed Commodities Mill | Bernardston | MA | Food Manufacturing311000 | — | ◇ UNVERIFIED |
